DYTISCIDA, 753. 
BIDESSUS (p. 19). 
Bidessus hydrovatoides (p. 20). 
Before the locality given, insert :—Muxico, Vera Cruz (Hége). 
4(a). Bidessus maculatus. 
Anodochilus maculatus, Bab. Trans. Ent. Soc. Lond, iii. p. 16 (1841) *. 
Bidessus maculatus, Sharp, Trans. Roy. Dubl. Soc. n. s. ii. p. 348 *. 
Hab. Panama, near the city (Champion).—Sovutn America, Brazil 1. 
5 (a). Bidessus curtulus. 
Breviter ovalis, convexus, absque pubescentia, nitidus, niger, parce punctatus ; elytris signatura sub-basali aliaque 
ad apicem testaceis; prothorace rufo-sordido, basi apiceque obscurioribus; antennis pedibusque flavis, 
Long. 1%, lat. ¢ millim. 
Hab. Panama, Taboga Island, San Miguel in the Pearl Islands (Champion). 
Head obscure red, the clypeus distinctly margined in the middle; striola on the 
wing-case rather longer than that on the thorax, the posterior yellow mark placed quite 
at the apex ; the coxe with only a few obsolete punctures. 
Allied to B. quadrisignatus, but only half the size and with the yellow mark on the 
wing-case extending quite to the apex. Numerous examples. 
6 (a). Bidessus centralis. 
Ovalis, sat convexus, dense punctatus, subtilissime pubescens, parum nitidus, testaceus; capite abdomineque 
fuscescentibus ; elytris nigris, fascia sub-basali ad suturam interrupta signaturaque anteapicali flavis. 
Long. 24, lat. 1 millim. 
Hab. Mexico, Chihuahua city (Hoge). 
Allied to B. pictodes, but of more elongate form and more acuminate behind; and 
with the yellow marks on the elytra of a different shape, the basal fascia being more 
irregular and with a more or less distinct prolongation extending backwards from it 
near the suture; the apical mark is subhamate, and placed well in front of the apex; 
the striola on the wing-case is about as long as that on the thorax. 
Bidessus lynceus (p. 22). 
Before the localities given, insert :—Mzxico, Tehuantepec (Loge). 
Bidessus spretus (p. 24). 
Before the localities given, insert :—Mexico, Mazatlan (ége). 
Bidessus obtusus (p. 24). 
Before the locality given, insert :—Mexico, San Juan Bautista in Tabasco, Mazatlan 
in Sinaloa, Tapachula in Chiapas (Hége). 
BIOL. CENTR.-AMER., Coleopt., Vol. I. Pt. 2, September 1887. 5 DD 
