162 HEMIPTERA-HETEROPTERA. 
Gerris filiformis, Fabr. Ent. Syst. iv. p. 191.12; Syst. Rhynch. p. 260.1; Stal, Hem. Fabr. i. 
p- 66.1; En. Hem. i. p. 218. 17. 
Leptocorisa linearis, Lap. Ess. Hém. p. 26%. 
Leptocorisa furcifera, Hope, Cat. Hem. ii. p. 18°. 
Leptocorisa tipuloides, Dall. List Hem. ii. p. 484. 5*; Guér. in Sagra’s Hist. de Cuba, Ins. p. 391, 
excl. syn.” 
Gerris (Leptocorisa) filiformis, Berg, Hem. Argent. p. 284. 367°. 
Hab. Guatema.a, San Gerénimo (Champion).—Cusa1?5; Braziu}? 4, Rio Janeiro ! 4 ; 
ARGENTINE REPUBLIC®. 
2. Leptocorisa tipuloides. 
Cimex tipuloides, De Geer, Mém. iii. p. 354. 27, t. 85. f. 18; Goeze, Ent. Beytr. ii. p. 273. 11; 
Gmel. Syst. Nat. 1. 4, p. 2194. 538. 
Mydocha tipuloides, Latr. Gen. Ins. ui. p. 126. 
Mydochus tipuloides, Ol. Enc. Méth. viii. p. 106. 2; Burm. Handb. ii. 1, p. 825. 2°. 
Leptocorisa tipuloides, A. & S. Hist. des Hém. p. 229.1°; Uhler, Bull. U.S. Geol. & Geog. Surv. 
ii. p. 294°; Town. Glover, Ill. Ins. Ord. Hem. p. 48, t. 3. f. 15. 
Gerris tipuloides, Stal, En. Hem. i. p. 218. 2*. 
Hab. Norta America, Philadephia?, Texas?4,—Mexico?; CrntraL AMERICA 3.— 
CotomsBia‘; Gurana, Surinam !, Cayenne?; Ecuapor‘*; Braziu‘. 
I include this species here on the authority of Prof. Uhler 3, not having received the 
species myself from Central America. 
Subfam. BERYTINA. 
Berytide, Fieber, Wien. ent. Mon. 1859; Eur. Hem. p. 209 (1861). 
Berytida, Stal, Hem. Afr. i. p. 119 (1864). 
Berytina, Stal, En. Hem. iv. p. 127 (1874). 
Berytine, Uhler, Bull. U.S. Geol. & Geog. Surv. ii. p. 406 (1877). 
I have followed Prof. Uhler in placing this subfamily in the Coreide and after the 
Alydine. Mr. Dallas also placed the genera which it comprises in about the same 
position. According to present knowledge we must consider the Palearctic Region 
the head quarters of the Berytine. Stal enumerates one African and three American 
genera. One of the last is represented in Central America; and I have been compelled 
to found a new one. i 
JALYSUS. 
Jalysus, Stal, Rio Hem. ii. p. 59 (1862); En. Hem. iv. p. 128 (1874). 
This genus is distinct from Neides and Hoplinus, the other American genera of the 
Berytine, by the impunctate corium; the apex of the clavus is produced and about 
reaches the membrane ; the antenne and legs are very long, the posterior femora usually 
passing the apex of the abdomen; the lateral angles of the pronotum are not prominent ; 
