8 Mr. T. D. A. Cockerell on Fossil Arthropods 
stump of a vein, disc. 3 is produced at end, and b.n. goes 
very little basad of t.-m. 
H. 183. Collected in 1891. The rudimentary vein 
limiting disc. 1] on r.u. 11s more basad than in the recent 
forms examined. 
Holomeristus (?) vecténsis, sp. n. (Fig. 6.) 
Head and thorax black. Wings hyaline, with very pale 
brown stigma and nervures. Anterior wing 3°5 mm. long 
and very broad (about 1:3 mm.). Stigma large ; m. very 
broad (deep), r. 1 curved, r.2 straight; areolet quadrate, 
very briefly petiolate above; b. n. with lower two-thirds 
straight, meeting t.-m., which, however, is not quite in a line 
with it. 
Fig. 6. 
Holomeristus (?) vectensis, sp. n. 
B.M., I. 9370(B.). This was examined by Mr. C. Morley, 
~ who left a note: “either Tryphoninz or Ophioninz.” The 
Ophionine genus Holomeristus agrees, except that it has the 
first r.n. nearly straight, and the marginal cell less bulging 
at base. It must be said, however, that the Pimpline Calli- 
ephialtes is very similar in venation, and Habropimpla is not 
very (different. 
Cremastus (f) arcuatus, sp.n. (Fig. 7.) 
Length 4 mm. ; head and thorax apparently fuscous or 
black ; abdomen ferruginous ; thorax small, abdomen long- 
petiolate. Anterior wing about 3°38 mm. long, clear, faintly 
brownish in the apical field ; stigma and nervures rather 
dilute fuscous. Stigma large, trigonal; m. very deep,-r. 1 
