234 The University Science Bulletin. 



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Graphocephala coccinca (Forster). 



(PI. XXII, fig. 9; pi. XXVIII, fig. 4.) 



Length, 1.87 mm.; greatest width, 0.22 mm. Basal portion narrow and rod- 

 hke, apical shaft broad and flat, about the same width for entire length; pre- 

 apical prominence present, distinct, obtuse-angled; not curved bej-ond base, 

 tip greatlj' narrowed and ending in a rather blunt point, chitinization light; 

 strengthening rod e.xtends caudad beyond last dorsal tooth. Toothed area on 

 dorsal edge occupies entire length of apical shaft; teeth nineteen in number, 

 medium in size, of a general triangular shape with the caudal side longer than 

 the cephahc, regular in size and shape, distinctly more heavily chitinized than 

 the rest of the valve; bear small secondarj^ teeth on both edges, three to six 

 on cephalic edge and eight to seventeen on caudal edge; tip notched with 

 small teeth on both dorsal and ventral edges, not continuous around the tip, 

 forty-five between preapical prominence and extreme apex; ducts easily vis- 

 ible though not conspicuous, elongate, rather few in number, curved, most 

 numerous apically; open apically, along dorsal edge in teeth, one to two to 

 each tooth, and a few in the face of valve back from edge. 



Genus Dr^culacephala Ball. 



The ovipositors of three species of this genus have been examined 

 and found to be similar. The ovipositor of Helochara communis 

 also shows its close relationship to this genus. In each case the ovi- 

 positor consists of a curved, rodlike basal attachment and a broad, 

 fiat, apical shaft which bears teeth along its dorsal edge for the en- 

 tire length. The distal teeth are triangular and the apical teeth sub- 

 quadrate. Both types of teeth bear small secondary teeth. The tip 

 in every case is notched with small teeth on both dorsal and ventral 

 edges, not continuous around the tip. The ducts may or may not 

 be conspicuous, but where visible are elongate, numerous and curved. 



Drceculacephala mollipes (Say). 



(PI. XXII, fig. 13 ; pi. XXVII, fig. 2.) 



Length, 2.1 mm.; greatest width, 0.33 mm. Basal portion narrow and rod- 

 like, apical shaft broad and flat, about the same width for entire length, nar- 

 rowing caudad to apex; preapical prominence wanting; not curved beyond 

 base, tip greatly narrowed by curving ventral edge and ends in an obtuse point, 

 chitinization moderately heavy; strengthening rod extends caudad to a point 

 midway between last dorsal tooth and apex. Toothed area on dorsal edge 

 occupies entire length on apical shaft; teeth twenty-eight in number, large, 

 basal nine of a general triangular shape, apical nineteen subquadrate with 

 the cephalic side longer than the caudal, rather irregular in size, shape and 

 spacing; the basal nine bear small secondary teeth on both cephalic and 

 caudal edges; the apical subquadrate teeth also bear secondary teeth, seven 

 to seventeen on the outer edge and all except the apical five bear secondary 

 teeth along the cephalic edge, one to six in number; tip is notched with small 

 teeth on both dorsal and ventral edges, not continuous around the tip, forty- 



