158 



TUYNNin.K. 



TIIYNNID^, Ericbson. 



THYNNUS. 



Tliynmis!, Fahr. Stfd. Ent. .300 (ranles only). 



jMyiiiiecock'.s, Lat'i: Nouv. Diet, (rilist. Nat. xx. 2nd od. (females). 



Tliynnoidt'S, fhtcr. Voy. Coq. Zool. ii. 232. 



A<n-ioniyia, Over. Voy. Cvq. ZdoI. ii. 218, 



Catocheilus, Guer. Mug. de Zool (1842). 



1 . Thynnus penetratus. 



Mah. Length 3| lines.— Black ; the thorax and abdomen with 

 white maculae, the legs ferruginous. The anterior margin of the 

 clypeus, a narrow line up the inner margin of the eyes as high 

 as the antenna), a spot above each of the latter, and a spot at 

 the base of the mandibles white ; two small obscure rufous spots 

 at the margin of the vertex. The margins of the prothorax, the 

 tegulae, an abbreviated narrow line on the mcsothorax, and a 

 similar line on the scutellum yellowish white ; wings hyaline and 

 iridescent, the nervures ferruginous; the coxae and trochanters 

 black. The basal segment of the abdomen with a central longi- 

 tudinal impression ; the first and three following segments with an 

 oblique short narrow white line at their extreme lateral margins ; 

 beneath, smooth and shining, the second, third, and fourth seg- 

 ments with a minute white spot laterally. 



Hah. Hunter River. 



2. Thynnus vastator. 



Male. Length 9 lines.— Head, thorax, legs, and extreme base of 

 the abdomen black ; the rest of the abdomen ferruginous. The 

 head and thorax with hoary pubescence, thin above, but much 

 more dense on the sides and beneath, and longest on the meta- 

 thorax and extreme base of the abdomen ; the clypeus, inner orbits 

 of the eyes as high as the antennae, and the mandibles yellow ; the 

 outer margin of the tegulae yellow ; wings subhyaline, a fuscous 

 cloud in the marginal cell ; the anterior femora and tarsi pale fer- 

 ruginous beneath. Abdomen not very closely or strongly punc- 

 tured, the apical segment rugose; the apical ventral segment 

 triangular, and with a curved spine at the apex. 



Female. Length 5 lines.— Black ; the base of the mandibles, the 

 fiageUum, apex of the scape, and the head anteriorly pale rufo- 



