446 



BUREAU OF ANIMAL INDUSTRY. 



Fig. 165.— Tarsus IV of male 

 E. calcaratus. After Birula, 

 1895, fig. 19. 



In his more extensive paper, published three years later, Koch 

 (184:7, p. 121) again refers to this form, giving two illustrations 

 (copied as tigs. 167, 168, in this paper), together with the following 

 diagnosis and description: 

 Jlfai^'.— Oval, very shining, posteriorly with three longitudinal grooves; yellow 

 red; mouth shield [capitulum] reddish; palpi and legs 

 yellow. 



Female. — Head shield [scutum] elongate, blood red, 

 anteriorly in the middle field a fiery red spot; mouth 

 shield [capitulum], palpi, and legs as in the male; body 

 very large, fallen in dorsally, with the same three longi- 

 tudinal grooves. 



Length of male seven-eighths line, of replete female 

 2i to 2| lines. 



The outline of the male tick is quite oval, still some- 

 what narrow posteriorly and on the posterior margin 

 somewhat l>luntly round; the surface is very finely, indistinctly, almost somewhat 

 wrinkly punctate and very shining; in front of posterior margin are found three 

 longitudinal grooves, of which the middle one is longer than the lateral and gutter 

 shaped; anterior of this in the middle, two depressions and a shallow depression back 

 of each of the two very fine small curved grooves of the indistinct head shield 

 [scutum]. Mouth shield [capitulum] and palpi are small, 

 the legs moderately long. 



The color of the body is a brownish yellow red, border- 

 ing on the menning-red, darker in the middle of the back 

 than on the sides. The mouth shield [capitulum] is 

 lighter, reddish yellow. Palpi and legs are yellow. The 

 replete female is broader anteriorly than posteriorly, 

 rounded posteriorly, the outline being quite that of the 

 sole of a shoe, on the back somewhat flat and almost fallen 

 in, so that the lateral margins are perceptibly raised above 

 the surface; the longitudinal grooves remain quite the 

 same as in the male. The head shield [scutum] is narrow; 



elongate heart-shaped, convex, pin-point finely punctate, blood red, almost dark- 

 varnish red, with a fire-red spot anteriorly on the middle field merging into the 

 ground color. The body is reddish olive color. Mouth shield [capitulum], palpi, 

 and legs are yellow, the latter somewhat darker than in the male. 



Three specimens, a male and two females, both the latter replete. 



Habitat. — West Indies.^ 



It will be noticed that Koch gives neither the host nor the exact type 

 locality. 



Fig. 166. — Ventral view pos- 

 terior portion of male E. 

 calcaratus. After Birula, 

 1895, fig. 20. 



^Eiformig, sehr gliinzend, hinten mit drei Liingsgruben ; gelbroth; Mundschild 

 rothlich; Taster und Beine gelb. Miinnchen. 



Kopfschildliinglich, blutroth, vorn im Mittelfelde ein Fleck feuerroth; Mundschild, 

 Taster und Beine wie oben; Hinterleib sehr gross, auf dem Riicken eingefallen, mit 

 denselben drei Liingsgruben. Weibchen. 



Lange des Miinnchens F^^, des vollgesognen Weibchens 2^ bis 2|^^^. 



Koch. Arch. f. Naturgesch. X. I. p. 237, n. 1. 



Dem Umrisse nach ist die miinnliche Zecke ziemlich eiformig, doch hinten etwas 

 schmal und am Hinterrande [p. 122] etwas stumpf rund; die Flache ist sehr fein, 

 undeutlich, fast etwas runzelig punktirt und sehr gliinzend; vor dem Hinterrande 

 befinden sich drei Liingsgruben, davon die mittlere liinger als die aiissern und rinnen- 



