1852,] 13h. 
2. H. Mulsanti, nigra, thorace subconvexo, antrorsum angustato, subtilis- 
sime punctulato, margine laterali et apicali albo, elytris rufo-flavis, fascia sub- 
basali, macula magna obliqua pone medium, 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 
front, and margined with white on the sides and apex. The large posterior spot 
of the elytra is more oblique, and isa 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.ambigua, nigra, thorace punctulato, margine laterali et antico, macu- 
lisque dorsalibus duabus plus minusve albis, elytris valde punctulatis rufis, ad 
basin albidis, sutura basi nigra. Long. -2—27. 
California and Oregon. Very similar to H. convergens, but easily distinguished 
by the stronzly 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: 
a. Lateral and apical margin narrow, white; dorsal spots small, distinct. 
4. Lateral margin white, dilated at the anterior angles; dorsal spots none. 
4. H. punctulata, 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 similar to the preceding, 
but the therax 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 
when 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 with unspotted varieties 
of H. convergens, from which their strongly punctulate elytra at once distin- 
guish them. 
5. H. maculata Lec.; Coce. maculata De Geer; C. 10-maculata Fabr.; 
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. 
Cocetnetta Linneé. 
Our species fall into three natural divisions according to the form of the en- 
closed spaces of the first abdominal segment, behind the coxe. I have latinised 
Mulsant’s ‘plaques abdominales”? into ‘‘ scuta abdominis ;”? Redtenbacher’s 
‘ Schenkellinie ’”? is more appropriate, but is not so easily translated. 
#«. Scuta abdominis margine arcuato, (Adalia Muls.) 
4. Scuta abdominis margine angulato, (Harmonia and Coccinella Muls.) 
y- Seuta abdominis margine externo obliterato, (Daulis Muls.) 
1. C. venusta Mels. Proc. Ac. Nat. Sc. 3, 178 (1847.) 
Harmonia notulata Muls. 83 (1850.) 
2. C. picta Randall, Bost. Journ. Nat. Hist. 2, 51. 
C. concinnata Mels. Pr. Ac. Nat. Sc. 3, 178. 
Harmonia contexta Muls. 87. 
Harmonia 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. 
