1852.] 131 



2. H. Mulsanti, nigra, thorace subconvexo, antrorsum angnstato, subtilis- 

 sime punctulato, margine lateral! et apicali albo, elytris rufo-flavis, fascia sub 

 basali, macula magna obliqua pone mediam, alteraque versus apicem nigris. 

 Long. -22. 



One specimen, Pic River, Lake Superior. Very similar to H. 5-signata 

 (Muls.) but differs by its convex and less punctured thorax being narrowed in 

 I'ront, and margined with white on the sides and apex. The large posterior spot 

 of the elytra is more oblique, and is a little narrower at its external part : the 

 epimera are white. 



In the only specimen of H. 5-signata in my collection, the thorax, besides the 

 large white blotches at the anterior angles, has two small white dorsal spots, and 

 one at the middle of the apex. 



3. H. a m b i g u a , nigra, thorace punctulato, margine laterali et antico, macu- 

 lisque dorsalibus duabus plus minusve albis, elytris valde punctulatis rufis, ad 

 baain albidis, sutura basi nigra. Lorij. '2 27. 



California and Oregon. Very similar to H. convergens, but easily distinguished 

 by the stronirly punctulate elytra : the elytra are usually without spots, sometimes 

 there is a single black dot on each at the anterior fifth near the sutnre. The 

 thorax varies as follows : 



at. Lateral and apical margin narrow, white ; dorsal spots small, distinct. 



^. Lateral margin white, dilated at the anterior angles ; dorsal spots none. 



4. H. p u n c t u 1 a t a, nigra, thorace valde punctulato, maculis duabus dorsa- 

 libus, alteris ad angulos anticos, margineque apicali medio prolongato albis, 

 elytris punctulatis, rufis basi pallidis, sutura antice nigra. Long '27. 



Several specimens, San Francisco, California. Very similai^ to the preceding, 

 but the thorax is more strongly punctured and more convex ; the white of the 

 sides extends only half way to the base, and the apical white margin, even 

 W'hen not entire, is prolonged a little in the middle ; the dorsal spots are some- 

 times wanting ; the posterior angles are sometimes marked with a small white 

 point. 



This species and the preceding have been confounded w^ith unspotted varieties 

 of H. convergens, from which their strongly punctulate elytra at once distin- 

 guish them. 



5i H. maculata Lee; Cocc mamlata De Geer; C. \Q-mac2data'F^hr.\ 

 C. oblonga Oliv. ; Megilla maculata Muls. 28. This species is common in the 

 southern part of California. One specimen from New York is more strongly- 

 punctured on the elytra than any other I have seen, but I can find no other 

 difference. 



CocciNELLA Linne. 



Our species fall into three natural divisions according to the form of the en- 

 closed spaces of the first abdominal segment, behind the coxae. I have latinised 

 Mulsant's "plaques abdominales " into " scuta abdominis;" Redtenbacher's 

 " Schenkellinie " is more appropriate, but is not so easily translated, 

 a. Scuta abdominis margine arcuato, {Adalia Mnls.) 

 /. Scuta abdominis margine angulato, {Harvionia and Coccinella Muls.) 

 y. Scuta abdominis margine externo obliterato, {Daidis Muls.) 



1. C. venusta Mels.Proc. Ac. Nat. Sc. 3,178 (1S47.) 

 Harmonia notulata Muls. 83 (1850.) 



2. C. pi c ta Randall, Bost. Journ. Nat. Hist. 2, 51. 

 C. concinnata Mels. Pr. Ac. Nat. Sc. 3, 178. 

 Harmonia contexta Muls. 87. 



HarTno7iia picta Muls. 1017. 



3. C. lacustris, hemispherica, nigra, dense punctulata, thorace macula 

 alba utrinque ad angulos anticos, elytris rufo-flavis, macula scutellari obcordata, 

 duabusque utrinque transversis nigris, lateribus pone humeros late sulcatis, 

 epimeris mesothoracis albis. Long '27. ^ 



Lake Superior, several specimens. This species very closely resembles C. 



