AMERICAN HYMENOPTERA. 367 



nfmctatliorax, femora and several uneven bands on abdomen, brown or 

 blackish; apical segment of abdomen dull ferruginous; wings deep 

 yellowish, hyali.ne, dusky at tips." 



Cuba. (Coll. Am. Ent. See.) 



The appearance of this fine insect is very much like that of Tremex 

 columba, for which it might readily be taken at first sight. 



2. T. latitarsis. 



Tremex latitarsis, Crossou, Proc. Ent. Soc. Phil, iv, lSf)5, 3, %. 

 " %. — Head, thorax and legs blue-black; abdomen ferruginous; 

 wings fusco-hyaline ; hind legs broad and flat." 

 Cuba. (Coll. Am. Ent. Soc.) 



ADDENDA. 



Ptilia, Sec. 2. — 2nd submarginal cell receiving two recurrent nervures. 

 Ptilia texana, n, sp. 



Length 0.25. Breadth of wings, 0.45 inch. 



9 . — Color black ; a spot on mandibles near the tip, the prothorax 

 except a black spot on its front, mesothorax, tegula?, anterior angle and 

 scutellum honey-yellow; legs black, with the tips of knees and parts 

 below, white, except the anterior tarsal joint, the tips of four hinder 

 tibiae and most part of their tarsi, which are black ; second joint of an- 

 tennaa half as long as first; third joint about the length of thorax, di- 

 minishing in size to tip, not extremely slender, ciliate ; lower ocellus 

 in a deep basin extending to base of antenna), a high carina between 

 antennae prolonged down the nasus; a curved notch at tip of nasus. 

 Abdomsn stout as in Se'aiidria ; tibla3 without side spurs; wings sub- 

 hyaline, clearer toward apex, marginal cell of only the upper wings 

 appondiculate ; first submarginal cell long, angulate at base, second 

 longer, receiving two recurrent nervures, the second near apical end, 

 third cell wider than long, the two cross nervures curved outward ; 

 lanceolate cell pctiolate, short, stout; underwings with two inner cells, 

 the lanceolate cell wanting. 



% . — Exactly resembles the female, except that the antenna? are bi- 

 furcate, about one fourth longer, more slender, cilia? about twice as long 

 as width of joint. 



Texas. (Coll. Am. Ent. Soc.) 



Cladius simplicornis, n. sp. 



Black, legs below the knees pale, apical tarsi blackish. Length 0.25. Br. 

 ■wings 0.50 inch. 



%. — Shining black; antenna) pilose with stiff black hair; joints 

 stout, enlarged at tips but not globose, simple, no spine at base of third 



